Nice guide Zab, well put together. I liked the section comparing shadow tanks to guardian tanks. The only thing I would comment on is
They are still only doing 5% less damage. If 5 players each deal 100 damage (total 500) before slow time. After slow time they are each doing 95 damage (475 total). The total loss is still only 5%.
Hmm, I suppose you are correct. :P